Explicitly export files needed by other packages

Add an explicit export statement (with the same visibility) for
files that are currently only implicitly exported and used by other
packages. This prepares changing the visibility of implicitly-exported
files to be package private without causing a breakage.

PiperOrigin-RevId: 283943016

src/Tulsi/BUILD

diff --git a/src/Tulsi/BUILD b/src/Tulsi/BUILD
index 4d80c28..908672e 100644
--- a/src/Tulsi/BUILD
+++ b/src/Tulsi/BUILD
@@ -6,6 +6,11 @@
 
 exports_files(["Info.plist"])
 
+exports_files(
+    ["BazelSelectionPanel.swift"],
+    visibility = ["//:__subpackages__"],
+)
+
 filegroup(
     name = "Icon",
     srcs = glob(["Assets.xcassets/AppIcon.appiconset/*"]),